Copying machine
US4969010A · kind A · utility
18Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1988 |
| Grant date | Nov 6, 1990 |
| Priority date | — |
| Expiry date | Nov 21, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2221/1687
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to copying machine, which comprises: upper and lower bodies which are bound by a hinge on one side, and a counterbalance mechanism installed in the vicinity of the hinge which works at the time of opening and closing the upper body within a predetermined angle, and stops functioning at the time of opening the upper body when the upper body opens beyond the predetermined angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.